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1.Method and apparatus for application of valve sleeves during tubing operation 失效
Title translation: 管道操作期间应用阀套的方法和装置公开(公告)号:US2753768A
公开(公告)日:1956-07-10
申请号:US35457853
申请日:1953-05-12
Applicant: ST REGIS PAPER CO
Inventor: HAHN WILLARD E , BURROUGHS EDWIN E
IPC: B31B39/00
CPC classification number: B31B2160/10 , B31B70/00 , B31B70/81 , B31B70/85 , B31B2155/00 , B31B2170/20
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2.
公开(公告)号:US2953976A
公开(公告)日:1960-09-27
申请号:US55720356
申请日:1956-01-03
Applicant: ST REGIS PAPER CO
Inventor: HAHN WILLARD E
CPC classification number: B29C66/0342 , B29C53/36 , B29C53/48 , B29C65/1432 , B29C65/20 , B29C66/003 , B29C66/004 , B29C66/1122 , B29C66/431 , B29C66/4322 , B29C66/71 , B29C66/72328 , B29C66/73921 , B29C66/80 , B29C66/818 , B29C66/8181 , B29C66/83413 , B29C66/8511 , B29C66/8744 , B29C66/87441 , B29C66/932 , B29C66/934 , B29C2035/1658 , B29K2711/123 , B29L2009/00 , B29L2009/001 , B29L2031/7128 , B31B70/266 , B31B70/644 , B31B2155/00 , B31B2170/20 , B29K2023/06
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公开(公告)号:US2845849A
公开(公告)日:1958-08-05
申请号:US50319155
申请日:1955-04-22
Applicant: ST REGIS PAPER CO
Inventor: HAHN WILLARD E
IPC: B31B29/00
CPC classification number: B31B70/00 , B31B2150/00 , B31B2160/10 , B31B2160/20
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